Vulnerability-Lookup

GSD-2021-31920

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Istio before 1.8.6 and 1.9.x before 1.9.5 has a remotely exploitable vulnerability where an HTTP request path with multiple slashes or escaped slash characters (%2F or %5C) could potentially bypass an Istio authorization policy when path based authorization rules are used.

Aliases

CVE-2021-31920

Aliases

CVE-2021-31920

JSON

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    "description": "Istio before 1.8.6 and 1.9.x before 1.9.5 has a remotely exploitable vulnerability where an HTTP request path with multiple slashes or escaped slash characters (%2F or %5C) could potentially bypass an Istio authorization policy when path based authorization rules are used.",
    "id": "GSD-2021-31920",
    "references": [
      "https://access.redhat.com/errata/RHSA-2021:1540",
      "https://access.redhat.com/errata/RHSA-2021:1538",
      "https://security.archlinux.org/CVE-2021-31920",
      "https://linux.oracle.com/cve/CVE-2021-31920.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
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      "id": "GSD-2021-31920",
      "modified": "2023-12-13T01:23:13.510341Z",
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          "pubdate": "2021-05-27",
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          "title": "Incorrect Authorization",
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      "lastModifiedDate": "2021-06-07T18:56Z",
      "publishedDate": "2021-05-27T05:15Z"
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}

CVE-2021-31920 (GCVE-0-2021-31920)

Vulnerability from cvelistv5 – Published: 2021-05-27 04:03 – Updated: 2024-08-03 23:10

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://istio.io/latest/news/security/istio-secur…	x_refsource_CONFIRM

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

GSD-2021-31920

CVE-2021-31920 (GCVE-0-2021-31920)

Tags

Sightings

Nomenclature

Related by attack behaviour